I have been sourcing my media server machine for a while now and now I have hit an unexpected snag. I have 4 4TB WD HDDs that are occupying my 4 sata ports on my ASUS z370 MOBO....as I wanted to use the raid controller on the MOBO I opted for a PCIE expansion card to supply additional SATA ports for my SSD that I wanted to use for my OS to decrease latency on my network. However, I cannot get the system to boot from the SSD plugged into the expansion card. I have removed my raid array and plugged directly into SATA 1 and get a successful launch. I have been successful in partitioning the SSD, downloading W10 Pro to it from my USB W10 launcher with the SSD plugged into the expansion card and the RAID array occupying all the SATA ports. However, when the OS reboots it wont recognize the boot drive on the SSD when it is plugged into the expansion card.
I cannot switch to an M.2 SSD as this will occupy my SATA 1 pathway and i have tried the controller in each PCI port on the MOBO and each has the same results.
So...does this mean that I need to get a MOBO that has more SATA ports or that there is an issue with the expansion card...In full disclosure, the expansion card was the cheapest offering from NewEgg...